EP0730967A2 - Gleichzeitiges Drucken mit verschiedenen Abschnitten von Druckköpfen für verbesserte Druckqualität - Google Patents

Gleichzeitiges Drucken mit verschiedenen Abschnitten von Druckköpfen für verbesserte Druckqualität Download PDF

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Publication number
EP0730967A2
EP0730967A2 EP95119407A EP95119407A EP0730967A2 EP 0730967 A2 EP0730967 A2 EP 0730967A2 EP 95119407 A EP95119407 A EP 95119407A EP 95119407 A EP95119407 A EP 95119407A EP 0730967 A2 EP0730967 A2 EP 0730967A2
Authority
EP
European Patent Office
Prior art keywords
scan
nozzle array
ink
color
printheads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95119407A
Other languages
English (en)
French (fr)
Other versions
EP0730967B1 (de
EP0730967A3 (de
Inventor
Nicholas Nicoloff, Jr.
Mark S. Hickman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HP Inc
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of EP0730967A2 publication Critical patent/EP0730967A2/de
Publication of EP0730967A3 publication Critical patent/EP0730967A3/xx
Application granted granted Critical
Publication of EP0730967B1 publication Critical patent/EP0730967B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/10—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by matrix printers
    • G06K15/102—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by matrix printers using ink jet print heads
    • G06K15/105—Multipass or interlaced printing
    • G06K15/107—Mask selection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2215/00—Arrangements for producing a permanent visual presentation of the output data
    • G06K2215/0082—Architecture adapted for a particular function
    • G06K2215/0094—Colour printing

Definitions

  • This invention relates generally to printers and, more specifically, to printing techniques for color printers.
  • Thermal inkjet printers operate by selectively energizing heating elements to expel droplets of ink through associated nozzles.
  • Each heating element which is typically a pad of resistive material about 50 ⁇ m by 50 ⁇ m in size, is located in a chamber filled with ink supplied from an ink reservoir.
  • a nozzle plate defining an array of nozzles, overlies the various chambers.
  • Upon energizing a particular heating element a portion of the ink in the chamber is vaporized and a droplet of ink is expelled through an associated nozzle toward the print medium, whether paper, fabric, or the like.
  • the firing of the heating elements is typically under the control of a microprocessor, the signals of which are conveyed by electrical traces to the heating elements.
  • the arrangement of printed dots may form any pattern, such as text or graphics.
  • Some of Hewlett-Packard's color printers will include a scanning carriage housing one inkjet pen containing black ink, as well as housing one or more color inkjet pens for printing cyan, magenta, or yellow ink. These color inkjet pens typically have a resolution of 300 dots per inch (dpi) in both the x and y axes and a printhead width (along the direction of paper travel) on the order of one-third inch.
  • dpi dots per inch
  • the pens are scanned across the width of the medium to be printed upon while the medium remains stationary.
  • the cyan, magenta, and yellow inks are ejected by the nozzles under control of the microprocessor to create the desired colors and patterns.
  • Each completed scan across the medium can print a swath approximately as wide as the width of the entire nozzle array of a pen.
  • the medium is moved forward the width of a swath, and the pens begin printing the next swath.
  • the color pens may be either a single tricolor pen, having three sets of nozzles for cyan ink, magenta ink, and yellow ink, respectively, or consist of three separate and identical pens each containing a respective one of the cyan, magenta, or yellow inks. Secondary colors are obtained by overlapping the various colors of ink or printing different color dots adjacent one another.
  • a scanning carriage in a color inkjet printer houses three identical color pens for printing cyan, magenta, and yellow.
  • a separate array of nozzles is associated with each color ink.
  • the carriage may also house a black pen.
  • the nozzle arrays are such that they scan over the same print area of the medium during a single scan.
  • only a section of each nozzle array is used for printing during a single scan such that wet ink of two different colors cannot overlap during a single scan. This gives the color ink deposited in one scan time to dry and penetrate the medium before a second colon is deposited over that previously deposited color. This technique reduces ink bleed between colors as well as paper cockle.
  • a single tricolor pen is used where a single nozzle plate contains three nozzle arrays, one for each color. A section of each nozzle array is used during a single scan, as described above, to prevent wet ink of two different colors from overlapping during a single scan.
  • inkjet printer 10 includes an input tray 12 containing sheets of media 14 which pass through a print zone, and are fed past an exit 18 into an output tray 16.
  • a movable carriage 20 holds print cartridges 22, 24, 26, and 28 which respectively hold yellow (Y), magenta (M), cyan (C) and black (K) inks.
  • the front of the carriage has a support bumper 30 which rides along a guide 32 while the back of the carriage has multiple bushings such as 34 which ride along slide rod 36.
  • the position of the carriage as it traverses back and forth across the media is determined from an encoder strip 38 in order to be sure that the various ink nozzles on each print cartridge are selectively fired at the appropriate time during a carriage scan.
  • the color print cartridges 22, 24, and 26 are replaced by a single tricolor cartridge having a nozzle plate such as shown in FIG. 14, 15, or 16.
  • a 300 dpi color inkjet cartridge 40 having a tab-circuit with a four column thirty-two pad electrical interconnect 42 is removably installed in three chutes 44, 46, 48 of a unitary carriage 50 (FIG. 4).
  • a flex-circuit member 52 (FIG. 6) having three matching sets of conductive pads 54, 56, 58 is mounted on flex-frame pins 60 for operative engagement with the cartridge pads when the cartridge is inserted into its appropriate chute.
  • An enlarged set of conductive pads 62 covering a larger area, having a different layout, and constituting an array of six columns totaling fifty-two conductive pads on the flex-circuit member is designed for operative engagement with cartridge pads on a 600 dpi black inkjet cartridge 64 (see FIG. 9).
  • the X-axis cartridge datums 65 engage the X-axis carriage datums 66
  • the Y-axis cartridge datums 67 engage the Y-axis carriage datums 68
  • the Z-axis cartridge datums 69 engage the Z-axis carriage datums 70 in a manner more fully described in the copending applications identified above and incorporated by reference herein.
  • a spring assembly including a backing sheet 74, a plate 76 and a gimbal spring 78 are sized for fitting into apertures 80 of flex-circuit frame 82 to assure proper electrical interconnection for the three color cartridges.
  • a unique spring assembly for the 600 dpi cartridge interconnect includes a unitary resilient foam member 84 which fits in a seat 86 which is larger than the aperture 80.
  • a mounting peg 88 fits into matching hole 90 which along with bottom and lower ledges 91, 93 and upper side and top ledges 92, 94 hold the foam member in proper position to assure operative engagement across the electrical interconnect.
  • FIGS. 7-8 show one possible mounting relationship between a 300 dpi nozzle array 96 of the color printheads and a 600 dpi nozzle array 98 of the black printhead.
  • Control circuitry 99 (including a multiplexer) on the substrate enables the three hundred firing resistors of the black printhead to be controlled through fifty-two electrical interconnect pads, and similarly enables all one hundred four firing resistors of each color printhead to be controlled through thirty-two electrical interconnect pads.
  • FIG. 12 schematically shows the difference between the 300 dpi printout produced by the color pens (i.e., pen cartridges) and the 600 dpi printout of the black pen of the preferred embodiment described herein.
  • the inventive method described below applies equally to a printer using multiple color pens or a single tricolor pen.
  • Fig. 13A is a schematic view as seen looking up from the media at the nozzle plates of the black pen 100, cyan pen 102, magenta pen 103, and yellow pen 104.
  • the arrangement of the pens in the carriage 20 of Fig. 1 is not significant in this invention.
  • the widths of the nozzle arrays may all be identical, the width of the nozzle array of the black pen 100 may be wider, as illustrated by dashed outline, to obtain faster printing speeds for black printing.
  • the individual nozzles 105 are shown in simplified form, and a pen may contain many more nozzles.
  • FIG. 13B shows the nozzle plate of a black pen 100 and that of a tricolor pen 106.
  • a tricolor pen 106 contains three ink reservoirs each holding either cyan ink, magenta ink, or yellow ink, and each in fluid communication with an associated one of the three groups of nozzles 105.
  • Such a tricolor pen 106 may be substituted for the three separate color pens in the scanning carriage illustrated in Figs. 1 and 2.
  • the scanning carriage of Figs. 1 and 2 would be modified to support and align the tricolor pen 106 in a manner similar to that described with respect to the individual color pens.
  • Figs. 13A and 13B the scanning direction of the pens across a page is shown by arrow 108, while the paper transport direction is identified by arrow 109.
  • each of the nozzle arrays may eject ink to avoid two colors of ink overlapping in a single scan of the carriage.
  • the section of each nozzle array which may eject ink is changed for each scan of the carriage so that, after multiple scans, a complete swath of each color may be printed across the medium.
  • the print characteristics are better defined and there is less overall swelling of the paper, resulting in less curling.
  • the control circuitry in the printer effectively blocks energization signals to the heating elements associated with the non-selected section of the nozzle arrays. During each scan, different groups of heating elements are effectively disabled. During these multiple scans, the medium is held stationary until an entire full-color swath is printed.
  • Figs. 14, 15, and 16 illustrate three embodiments of this method.
  • Fig. 14 the paper or other medium is held stationary while the carriage containing the pens makes three scans back and forth across the paper. Printing may occur during both scan directions or during only one scan direction.
  • the heating elements associated with the top one-third of the nozzles in the magenta pen 103 (Fig. 13A) are selectively energized to print a top swath 110 of magenta ink across the page. Assuming there are 100 nozzles in each of the nozzle arrays of pens 102, 103, and 104, only the top 33 nozzles of the magenta pen 103 may eject ink.
  • the heating elements associated with the top third of the nozzles in the cyan pen 102 are selectively energized, the heating elements associated with the middle third of the nozzles in the yellow pen 104 are selectively energized, and the heating elements associated with the bottom third of the nozzles in the magenta pen 103 are selectively energized.
  • the heating elements associated with the top third of the nozzles in the yellow pen 104 are selectively energized, the heating elements associated with the middle third of the nozzles in the magenta pen 103 are selectively energized, and the heating elements associated with the bottom third of the nozzles in the cyan pen 102 are selectively energized.
  • Fig. 15 illustrates the situation where only magenta and cyan inks are required to print the desired colors across a full swath.
  • the heating elements associated with the top half of the nozzles in the magenta pen 103 and the heating elements associated with the bottom half of the nozzles in the cyan pen 102 are selectively energized to print swaths 114 and 115.
  • the heating elements associated with the bottom half of the nozzles in the magenta pen 103 and the heating elements associated with the top half of the nozzles in the cyan pen 102 are selectively energized.
  • the yellow ink is not used.
  • the selective operation of the heating elements in the tricolor pen 106 (Fig. 13B) printhead is identical to that described above, since the three arrays of nozzles in the tricolor pen 106 are functionally equivalent to the three arrays of nozzles in pens 102, 103 and 104.
  • the nozzle array for each color in the tricolor pen 106 contains 64 nozzles instead of the 100 nozzles in the individual pens 102-104.
  • the resulting printed swath across a page for each scan will be identical to those shown in Figs. 14 and 15.
  • Fig. 16 illustrates another embodiment of the invention where heating elements associated with the full nozzle array for a single color are selectively energized during a single scan of the carriage.
  • a full swath of a single color is printed during each scan.
  • a full swath of another color is printed.
  • all three colors are printed.
  • only the magenta pen 103 is energized for the first scan
  • only the cyan pen 102 is energized for the second scan
  • only the yellow pen 104 is energized for the third scan.
  • a separate scan may be performed for the black pen 100 or the black pen 100 may be energized simultaneously with any of the color pens.
  • the selection of a particular nozzle array section to be used for printing during a scan may be predetermined, or the selection may be made dynamically, where such selection would depend on the colors required to be printed in a full swath across a page.
  • the sections of the color pen printheads may be energized in the manner illustrated for the first scan in Fig. 14.
  • the medium may then be forwarded after this first scan by a distance equal to one-third of the total swath width.
  • the same sections of the printheads are again energized to print the same color pattern but effectively shifted down one-third swath width on the medium. This would cause the cyan ink to be printed over magenta ink from the previous scan, cause the yellow ink to be printed over cyan ink from the previous scan, and cause magenta ink to be printed over a blank portion of the medium.
  • the yellow ink printed in a third scan overlaps the cyan ink printed in the second scan which overlaps the magenta ink printed in the first scan.
  • the dots of the various primary colors do not need to physically overlap to produce the appearance of additional colors.
  • the various sections of the nozzle arrays ejecting ink during a scan may also be changed during a single scan to avoid possible visual artifacts, as long as two overlapping colors are not printed during a single scan.
  • adjacent swaths may be printed to effectively dovetail one another to avoid any well-defined interface between the two colors. This technique is known as shingling.
  • the extent of dovetailing between two adjacent colors without creating visual artifacts may be determined on a empirical basis.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Fax Reproducing Arrangements (AREA)
EP95119407A 1995-03-06 1995-12-08 Gleichzeitiges Drucken mit verschiedenen Abschnitten von Druckköpfen für verbesserte Druckqualität Expired - Lifetime EP0730967B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US399401 1982-07-19
US08/399,401 US5654744A (en) 1995-03-06 1995-03-06 Simultaneously printing with different sections of printheads for improved print quality

Publications (3)

Publication Number Publication Date
EP0730967A2 true EP0730967A2 (de) 1996-09-11
EP0730967A3 EP0730967A3 (de) 1996-09-25
EP0730967B1 EP0730967B1 (de) 1999-10-06

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EP95119407A Expired - Lifetime EP0730967B1 (de) 1995-03-06 1995-12-08 Gleichzeitiges Drucken mit verschiedenen Abschnitten von Druckköpfen für verbesserte Druckqualität

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US (2) US5654744A (de)
EP (1) EP0730967B1 (de)
JP (1) JPH08258289A (de)
DE (1) DE69512633T2 (de)

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EP0827837A2 (de) * 1996-09-04 1998-03-11 Lexmark International, Inc. Verfahren zur Vermeidung von bei Druckerpausen entstehenden Artefakten
US6542258B1 (en) 1998-09-09 2003-04-01 Hewlett-Packard Company Fast building of masks for use in incremental printing
US6788432B1 (en) 1998-09-09 2004-09-07 Hewlett-Packard Development Company, L.P. Optimal-size and nozzle-modulated printmasks for use in incremental printing
US6965452B2 (en) 1998-09-09 2005-11-15 Hewlett-Packard Development Company, L.P. Masks on demand for use in incremental printing

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US5654744A (en) * 1995-03-06 1997-08-05 Hewlett-Packard Company Simultaneously printing with different sections of printheads for improved print quality
US5912682A (en) * 1996-09-23 1999-06-15 Pitney Bowes Inc. Method of printing using inks having different characteristics
JP3595663B2 (ja) * 1996-10-30 2004-12-02 キヤノン株式会社 インクジェット記録装置およびインクジェット記録方法
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US6416157B1 (en) 1998-09-30 2002-07-09 Xerox Corporation Method of marking a substrate employing a ballistic aerosol marking apparatus
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US6161918A (en) * 1998-11-06 2000-12-19 Lexmark International, Inc. Thermal ink jet printer
US6267467B1 (en) * 1998-12-24 2001-07-31 Seiko Epson Corporation Color printing using a vertical nozzle array head
US6254217B1 (en) 1999-07-29 2001-07-03 Hewlett-Packard Company Apparatus and method for hue shift compensation in a bidirectional printer
US6310640B1 (en) 1999-09-20 2001-10-30 Hewlett-Packard Company Banding reduction in multipass printmodes
US6536869B1 (en) 1999-09-20 2003-03-25 Hewlett-Packard Company Hybrid printmask for multidrop inkjet printer
US6328436B1 (en) 1999-09-30 2001-12-11 Xerox Corporation Electro-static particulate source, circulation, and valving system for ballistic aerosol marking
US6293659B1 (en) 1999-09-30 2001-09-25 Xerox Corporation Particulate source, circulation, and valving system for ballistic aerosol marking
US6412938B1 (en) 2000-06-16 2002-07-02 Xerox Corporation System and method for reducing inter-color bleeding in liquid ink jet printing
US6582055B1 (en) 2001-08-07 2003-06-24 Lexmark International, Inc. Method for operating a printer having vertically offset printheads
US6869176B2 (en) * 2001-09-07 2005-03-22 Canon Kabushiki Kaisha Recording apparatus, and recording medium floating prevention member
JP4144852B2 (ja) * 2002-08-13 2008-09-03 キヤノン株式会社 インクジェット記録装置及びインクジェット記録方法
JP2004268565A (ja) * 2002-10-09 2004-09-30 Oce Technologies Bv マルチカラーインクジェット印刷方法およびプリンタ
EP1560881B1 (de) * 2002-10-11 2011-11-23 University of Connecticut Vernetztes polycycloocten
US7093926B2 (en) * 2003-07-16 2006-08-22 Hewlett-Packard Development Company, L.P. Printhead arrangement
US6969160B2 (en) * 2003-07-28 2005-11-29 Xerox Corporation Ballistic aerosol marking apparatus
JP2005199696A (ja) * 2003-12-15 2005-07-28 Canon Inc インクジェット記録装置、インクジェット記録方法、および記録ヘッド
JP4967378B2 (ja) * 2005-03-29 2012-07-04 セイコーエプソン株式会社 インク組成物
US20080132599A1 (en) * 2006-11-30 2008-06-05 Seiko Epson Corporation. Ink composition, two-pack curing ink composition set, and recording method and recorded matter using these
JP5472670B2 (ja) 2007-01-29 2014-04-16 セイコーエプソン株式会社 インクセット、インクジェット記録方法及び記録物
US8894197B2 (en) * 2007-03-01 2014-11-25 Seiko Epson Corporation Ink set, ink-jet recording method, and recorded material
JP4816976B2 (ja) * 2007-08-09 2011-11-16 セイコーエプソン株式会社 光硬化型インク組成物
EP2028241A1 (de) * 2007-08-09 2009-02-25 Seiko Epson Corporation Lichthärtbare Tintenzusammensetzung, Tintenpatrone, Tintenstrahlaufzeichnungsverfahren und aufgezeichnetes Material
JP4766281B2 (ja) * 2007-09-18 2011-09-07 セイコーエプソン株式会社 インクジェット記録用非水系インク組成物、インクジェット記録方法および記録物
JP4989393B2 (ja) * 2007-09-21 2012-08-01 キヤノン株式会社 インクジェット記録装置およびインクジェット記録方法
JP2009269397A (ja) * 2008-02-29 2009-11-19 Seiko Epson Corp 不透明層の形成方法、記録方法、インクセット、インクカートリッジ、記録装置
JP2011152747A (ja) * 2010-01-28 2011-08-11 Seiko Epson Corp 水性インク組成物、およびインクジェット記録方法ならびに記録物
JP5692490B2 (ja) * 2010-01-28 2015-04-01 セイコーエプソン株式会社 水性インク組成物、およびインクジェット記録方法ならびに記録物
JP7395270B2 (ja) * 2019-06-27 2023-12-11 キヤノン株式会社 画像記録装置及び画像記録方法

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0827837A2 (de) * 1996-09-04 1998-03-11 Lexmark International, Inc. Verfahren zur Vermeidung von bei Druckerpausen entstehenden Artefakten
EP0827837A3 (de) * 1996-09-04 1999-07-28 Lexmark International, Inc. Verfahren zur Vermeidung von bei Druckerpausen entstehenden Artefakten
US6542258B1 (en) 1998-09-09 2003-04-01 Hewlett-Packard Company Fast building of masks for use in incremental printing
US6788432B1 (en) 1998-09-09 2004-09-07 Hewlett-Packard Development Company, L.P. Optimal-size and nozzle-modulated printmasks for use in incremental printing
US6965452B2 (en) 1998-09-09 2005-11-15 Hewlett-Packard Development Company, L.P. Masks on demand for use in incremental printing

Also Published As

Publication number Publication date
EP0730967B1 (de) 1999-10-06
JPH08258289A (ja) 1996-10-08
US5654744A (en) 1997-08-05
EP0730967A3 (de) 1996-09-25
DE69512633T2 (de) 2000-05-18
US5903290A (en) 1999-05-11
DE69512633D1 (de) 1999-11-11

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